Question I've been scared to ask

I'm a four year breast cancer survivor, and underwent an oopherectomy this summer, putting me into instant surgical menopause. Recently, I've developed non-localized pain in my left breast, where I originally had breast cancer. I can't feel any lumps or changes, and neither could my gynecologist when I went in for my annual exam two weeks ago. She said that it was behaving like a muscle problem, but when I asked if I could wait until my December check-up with my oncologist she said, "It's not worth the risk."

My question - has anyone ever had generalized breast pain that was a symptom of breast cancer? Right now I'm feeling both scared and paralyzed.